Apparatus for hoisting materials



H. s.I GARDNER. APPARATUS FOR HOISTING MATERIALS.

APPLICATIDN FILED DEC. 22, i920.

Pana June 20, 1922;

TIIE.

A TI'OHNEYS HOWARD S. GARDNER, OF EAST ORANGE, NEW' JERSEY.

APPARATUS FOR- HOISTING lVlAJIERIAII'JS.l

Specification of Letters Patent.

lPatented June 20, 1922.

Original application filed March 23, 1918, Serial No. 224,177. Divided and this application filed Decembei 22, 1920.

To all whom t may concern.'

Be it known that I, HOWARD S. GARDNER, a citizen of the United States, and resident of East Orange, county of Essex, State of New Jersey, have invented certain new and useful Improvements in Apparatus for Hoisting Materials, of which the following is a specification.

My invention relates to apparatus for hoisting and discharging materials and more particularly to that class of'such apparatus which includes a bucket w-fhereby the material; is carried to the point of discharge. The object of my invention is to provide a novel arrangement whereby the bucket is automatically relieved of strains during loading there-` of and whereby injury to operating elements included in said bucket is prevented when the latter reaches its loading position. My invention will be fully described hereinafter and the features of novelty will be pointed out in the appended claims. The present application is a division of another application filed by me on March 23, 1918, `Serial No. 224,177.

In the accompanying drawings, which illustrate specific embodiments of my invention without defining its limits, Figure 1 is' a general elevation; Fig. 2 is. a side elevation; Fig. 8 is a sectional view looking from the front; and Figs. 4; and 5 are similar views'showing another form of the invention.

My improved construction is particularly adapted for handling concrete and other. coalcscent material in building operations. and construction work, and I have accord ingly chosen an installation of this type of apparatus as an example of my invention for the purposes of illustration and description and without any intent to define its limits. 1

As shown in the drawings, the apparatus comprises a pair of parallel guideways 15 which are arranged in the building or other structure in any suitable manner; these guideways may be of any well known type adapted either to be built up in sections to keep pace with the construction work or to be installed in a structure after the latter has reached its intended height.v When the apparatus is used in construction work the guideways 15 preferably extend from a point below the lowermost part of the struc- Seri'al No. 432,447.

tureunder construction, as, for instance, 'a pit 16 formed in the cellar of a building, to the uppermost point at which material is'to be delivered. The guideways 15 serve intended vertical or other path. The bucket 17 may be raised and lowered or otherwise manipulated in any suitable manner, as by means of a cable or the like 17a having its one end connected,y for instance, at 19 with a frame 2O in which the bucket 17 `is mounted and passing over a suitable pulley 21 to the drum of an engine or motory which provides the power `whereby said bucket is operated. The bucket 17 itself may be of any suitable dimensions 'and form and generally is providedwith a bottom 22 inclining downwardly from the rear portion toward aneXit opening 23 formed in the front wall or portion o f said bucket. opening is normally lclosed by means of a gate. door or the like 24:, carried by and depending, for instance, from hinges 25 journalled in suitablelbearings located at'the proper points upon the bucket 17. In the preferred form, the gate or door 24 is pref` erably provided with side ywings 27 which in thev closed position extend .exteriorly along the side walls of the bucket 17 and in the open positionA of the gate-bridge the spaces between it fand the bucket and prevent spreading ofthe material during discharge. l

The gate 2f1may be locked in its closed position and released in any suitable man-A ner as, for instance, by lmeans of bolts 28 operated by means of mechanism 29, including a manipulating lever 30, all of which may, for instance, be in the form described in detail in my co-pending application hereinbefore' referred to. The apparatus may further include a chute 31 pivotally suspended on the bucket bymeans of links 32, said chute serving to bridge v the space between the discharge end of the bucket and the receiving point or element during the discharge of the material from said bucket. The chute 31 may be moved to and from an operative position by mechanism including links 33, an arm 34 and a manipulating lever similar to the lever 30, .All of these eleiments may be in the form as also illustrated and described in my application above mentioned.

It will be noted that large parts of the respective mechanisms for controlling the gate and for operating the chute are located beneath the bucket upon the bottom thereof. These elements, and more particularly the chute 31, are thus liable to injury as the bucket reaches its loading position; in this latter position, the bucket is also subjected to severe strains as the material is introduced. To prevent injury to the parts mentioned and to relieve the bucket from the strains referred to, I provide the following novel arrangements.

As shown in Figs. 1 and 2, the bucket 17 is provided with shoes which may comprise T-irons or the like 85 secured in position in any suitable manner as by being riveted to the lower ends of channel-irons which project below the bucket and form part of the frame 20, the horizontal members 36 of the T-irons constituting` the shoes proper; suitable plates and angle irons may be provided to increase the rigidity of the construction to a maximum extent. These shoes 36, in the lowermost position of the bucket 17, are arranged to rest upon supports 37 which may be secured to the guides 15 at the proper points and which may comprise a plurality of sections of wood or other material suitably joined together and presenting an upper flat surface corresponding to the flat surface of the shoes 36. The supports 37 are so located as to prevent any part of the bucket 17 or any of the parts carried thereby from coming into contact with the bottom of the pit 16 or its equivalent and so as to firmly support thel bucket from below during the loading operation. rlChe co-operation of the two flat surfaces of the shoes 86 and supports 87 provides a very secure and firm rest for the bucket which is maintained in the most suitable position for loading with a minimum of strain on the bucket or any of its parts or upon the guideways 15.

Instead of being constructed with a flat surface as in 1F igs. 1 and 2, the supports may have their upper Surfaces inclined at aiigles corresponding to the angle of the bottom F22 of the bucket as shown by the supports 37a in F 4l; and 5, said inclined surfaces directly engaging said bottom when the bucket is in position for loading. 1n this case, the bucket is preferably provided with a pair of shoes 36 depending` from the bottom 22 and having their free ends curved as at 36h. These shoes 36a are arranged to pass behind the supports and engage the one vertical surface of each support 37a and thus serve to hold the bucket rigidly in position during loading thereof. In other words, these shoes in co-operation with the supports, brace the bucket firmly against any strains in a direction toward the front of said bucket, during loading'. ln constructions in which the bottom of the bucket is inclined downwardly toward the front this is important, as the tendency of the load to slide down upon said inclined bottom results in considerable strain toward the front of the bucket. W ith my improved arrangement such strains are neutralized by the shoes and supports and are not transmitted to any appreciable extent to the guideways which are thus protected from distortion during loading' of the bucket.

My invention is extremely simple in construction and efficient in operation and requires no skilled attention, either in operation or in installation. In my improved appar'atus the parts are all constructed and combined in such a manner that the effects of all strains, stresses and shocks are neutralized, thus prolonging the life of the apparatus and rendering it proof against rough and unusual usage. y

Various changes in the specilic forms shown and described may be made within the scope of the claims without departing from the spirit of my invention.

vrl claim:

1. 1n a hoisting` machine, a pair of upright guideways, a bucket arranged to travel lengthwise thereof, a support at the lower end of each guideway shaped to fit the bottom of said bucket and providing' a. rigid rest therefor in its lowered position and devices carried by said bucket shaped to lit one surface of said supports whereby strains on the bucket in a forward direction are neutralized.

2. In a hoisting'l machine, a pair of upright guideways, a bucketarranged to travel lengthwise thereof andV having an inclined bottom, a support at the lower end of each each guideway having an upper surface inclined to correspond with the inclination of the bottom of said bucket and affording a rest therefor in its lowered position and shoes carried by said bucket and arranged to fit behind sai-d supports whereby strains in said bucket in a forward direction are neutralized. Y Y Y ln testimony whereof l have hereunto set my hand.

HVVARD S. GARDNER. 

